Indicating- mechanism



S. JENCICK.

INDICATING MECHANISM.

APPLICATION FILED JUNE 2. me.

Patented' F6b.'-24, 1920.

LL-ATE SPARE "HOT BEARING 4%?" 38 3 155 SAFELX 035mb view of a portionof a motor vehicle showing TED STATES PATENT orrron.

STEPHEN JENCICK, OE CLEVELAND, OHIO, ASSIGNOR '10 GUSTAVUS A. SCHANZE,OF

CLEVELAND, OHIO.

INDICATING MECHANISM.

, To all whom it may concern: I

- Mechanism, of which the following is a nectionfi and an opening-.11for the outlet specification.

This invention relates generally speaking to indicating devices andparticularly to that class of such devices employing-means forindicating the running condition of. a motor of a motor vehicle.

More specifically the invention relates to a motor lIlCllCELtOPcomprlslng means connected to the oil circulating systemfor indicatingthe various conditions of theoirculating oil, for example the pressureofcirculating and the temperature of the oil. V i

The invention may further be briefly summarized as consisting-in theconstruction and combination of parts hereinafter set forth in thefollowing drawings, description and claims. p p v Referring to thedrawings Figure 1 is a my apparatus applied thereto; Fig. 2 is a crosssection of theindicator; and Fig. 3 is a front elevation. I

In the embodiment shown in the drawings 1 represents the frame of amotor vehicle supported upon wheels such as'2. Mounted on the frame is asuitable engine 3 having an oil circulating pump 4 of any preferred typeconnected by a pipe 5 with an indicator inlet connection 6. A loweroutlet connection 7 is connected by a pipe 8 to any sultable part of thecrank casing. The description thus far merely relates to one type-ofarrangement which is satisfactory in operation and it is obvious thatany type of oil circulating sys-- tem' may be used in connectionwiththe'indicator.

The indicator comprises a cup shaped casing 9. having an opening 10forthe inlet conconnection 7, the latter being arranged near the bottompartof the casing at a point abovev the same to produce a deposit of asmall amount of oil at this point. 7 The casing 9 has an outwardlyextending flange 12 provided with openings 18 to receive screws or othersupporting devices. The caslng is internally threaded at 13 for apurpose to be described. The inlet connection 6 within the casing 9- isprovided with an enlarged pressure cylinder member 14 which ispreferably circular as shown in dotted lines 1n Fig. 3, and isprovidedwith a chamber 15 and connnumcating by a port 16 wlth' thethreaded openlng 1n thev casing 6.

A plug 1' Specification of Letters Patent. Patented Feb, 24 1920,Application filed June 2, 1916. Serial No. 101,300. I i

4 is screwed into the pressurecylup inder member at the upper end of thecham:

ing a reduced stem 20 adaptedto project throughareduced opening 21. Thisstem is provided withannular ribs 22 fitting more or less loosely thebore'at the opening 21. A spring 23 is arranged between the plunger 19and the shoulder formed by the reduced opening 21 so that the plunger isnormally forced upward into engagement with the extension 18. There issutiicient clearance about the plunger and the annular flanges or ribs22 so that oil may leak past and drip from the lower end of the stem 2for a purpose to be described. t

The annular ribs 22 form a rack which meshes with a pinion 24 mountedupon a pin 25 supported in a plate 26 secured to the front end of thepressure cylinder member 14. On the outside of this plate the pin 25 isprovided with'an index hand 27 adapted to move in alinement with variousgraduations arrangedupon a dial as Wlll appear.

It is obvious from the foregoing construction that as the oil issupplied to the pressure cylinder by the circulating pump 4 it willforce the plunger down and move the index hand 27 in a clockwisedirection, as.

shown in Fig. 3, an amount corresponding to the pressure of the oil. It1s also obvious that by reason of the leakages past the plunger and thestem .oil'will drip from the lower end of this stem to the bottom of thecasing from whence it will pass out through the BX? haust connection 7.p

In front ofthis pressure cylinder member is astop ring 28, angularincrosssection and forced into place by pressure or held by any othersuitable means. front face. of this ring is a gasket 29 on the inside ofa glass 30 which is heldinplace by. a ring 31 engaging the threadedportion 13' of the casing9. The glass 30 is provided with an opening 32near the bottom for re.-

Engaging the ceiving. the tube 33..of' a thermometer or other heatresponsive device. This tube is provided with the usual bulb 34 which ispreferably arranged directly under the stem 20 so that the oil will dripfrom the latter directly onto the former. Suitable heat responsiveliquid is provided in the bulb 34, and the tube operates in a manner smilar-to the operation'of the usual thermometer.

- The tube 33 is extended up the faceof the glass as is shown and isheld in place by cement 3'5packed into the opening 32 about the tube 33.Engaging inside of the ring 31 is an inwardly extending flange of a dialand this dial is made up of a flat peripheral portion 36 adapted to'restagainst the outer face of thefian'ge 12 with the metal crimped cants. 7

It will be seen from the foregoing description that when the motor isoperating and 3 mometer' tube 3%l'and, formsa pool in the tor'with theheatfresppnsive indicator is of the oil is circulating the pressure willbe indicated byreason of the fact that the pres, sure cylinder plungerwill be moveddownward'and theindex hand 27 will be rotated inaclockwise'direction and will indicate on 'thedialthe pressure of thecirculating oil.

Oil, however, moves past the plunger and past its stem and drops'downupon the therbot'tom' of' the easing into which the bulb projects; Thiscauses the thermometer or the heatresp'onsive element to indicate theheat condition of the oil or lubricant.

Tlie 'greatca'dvantage in this device over devices for similar purposesWhichioperate in r conjunction'with the cooling system is that thetemperature of the cooling fluid does not necessarily indicate the heatconditions of the motor. inasmuch as variation in the thickness of thecylinder walls, a sluggish 'circul'ation of the water and various othercondltlons may affect the nd cator and give a Wrong impression. Forexample, suppose a bearm fluid or system. In the present device theoilfcomes directly contact with the var ousfparts' the bearings includedand f is r circulated about the plstons" in the cylinders and jofnecessity it s'heat condition is more necessaryto determining the properor improper-running cond tions of the motor.

The combined useof the pressure indicagreat value for'thefreasontliat itisa well knewii lfaet that 'a lub'ricantat a'low temv 4 A 7 were to heatthen there Hwo'uldbe no mdlcation 1n a device which "operated 1nCODJUDCtlOIl with .the cooling perature 'vvill produce greater pressurein a 7 pressure device than a high'temperature and these facts should beknown to the operator, and they work hand in hand to give the properindication as to the conditions which are prevailing with respect totherrunnlng of the motor.

There is alsoa very important feature in favor of this invention in thatit may operate on an air cooled motor.

Tt-is also a feature of the presentdevice that the operator may -checkthe operation.

7 Having described my invention, 1 claim:- 1. The combination with themotor of a motor vehicle, and an oil circulating system therefor, ofmeans connected to said system for simultaneously indicating thetemperature and pressure of the oil therein and thereby also indicatingthe con'dition of the motor.

2. The combination: with the motor of a motor vehicle, and an oilcirculating system a motor vehicle, and an oil circulating systemtherefor, of a hollow casing, means for circulatin the oil from saidcirculating system through said casing, and means carried by said casingand affected by oil flowing therethrough for simultaneously indicatingits pressure and temperature and thereby also lnd cat ng the conditionof the motor.

at. The COIHblllttlOIl' with an 011 circulating system for the motor ofa motor vehicle, of means for slmultaneously indicating the temperatureand pressure of the oil in said system.

5. The combination'with an oil circulat-' temperature and pressureof theoil in said system, said means producing a Visible ind p dication' ofthe flow of oil in said system. apt" to' furnlsh' the desired"nformation In testimony whereof I affix my signature in presence of twowitnesses as follows.

